First you have to take magecraft....
http://darknessfalls.leaderdesslok.com/character_feats.htm#MagecraftMagecraft [Channeling]
Prerequisites (Hermetic only): Literacy in at least one language in which you are fluent.
Benefit: When you gain this feat, you must choose the magical tradition with which you are connected. You then become a channeling spellcaster and gain benefits and abilities as described below. Regardless of the tradition chosen, the character gains knowledge of prestidigitation, three other 0-level spells of his choice, and one 1st-level spell of his choice. He may then cast a number of those 0-level spells per day equal to 3 + his spellcasting ability modifier. If the caster exceeds this limit, treat all 0-level spells as 1st-level spells for purposes of spell energy and spell damage.
In addition, he gains a number of spell energy points equal to his spellcasting ability modifier. The spell energy can be used to cast the 1st-level spell he selected, as well as later learned spells.
Note that when selecting your 1st-level spell, you may not select spells from the greater schools of magic.
Until a character learns a Spellcasting feat, he can only cast the spells that he learned from the Magecraft feat. Once a character gains a Spellcasting feat, he may learn and cast any channeled spells he wishes within the limits of the rules for channeled spellcasting.
Source: Midnight 2nd Edition, p. 123
The Three Traditions
Charismatic
Spellcasting Ability: Based on Charisma.
Spell List: Magecraft spells must be chosen from the core rules bard spell list. Spellcasting spells must be chosen from the Midnight spell list.
Hermetic
Spellcasting Ability: Based on Intelligence.
Spell List: Magecraft spells must be chosen from the core rules sorcerer/wizard spell list. Spellcasting spells must be chosen from the Midnight spell list.
Spiritual
Spellcasting Ability: Based on Wisdom.
Spell List: Magecraft spells must be chosen from the core rules druid spell list. Spellcasting spells must be chosen from the Midnight spell list.
http://darknessfalls.leaderdesslok.com/character_feats.htm#SpellcastingSpellcasting [Channeling]
Prerequisites: Magecraft.
Benefit: When this feat is selected, choose one school of magic from the list below. You may now learn and cast spells from this school. You immediately learn one new spell from that school, which may be of any level that you may cast. You may hereafter select spells from this school when learning new spells, and you may cast known spells from this school using the channeled spellcasting rules.
The eight schools are Abjuration, Conjuration (lesser), Divination, Enchantment, Evocation (lesser), Illusion, Necromancy, and Transmutation.
Special: You may choose this feat more than once. Each time you do, you must choose a different school of magic.
Source: Midnight 2nd Edition, p. 124